William a



W. A. BARLOW.

H eating Stove.

Patnted J an. 1, 18 67.

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WILLIAM A. B'ARLOWOF ELKH'ORN, 'WISCONSIN. Letters Tatent No. 60,844,dated January 1, 1867.

HEATING STOVES.

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TO ALL'WHOM'IT MAY CONCERN:

Be it known that I, WILLIAM A. BARLOW, of Elkhorn, in the county ofWalworth, and State of Wisconsin, have invented an Improved Stove, whichis specially applicable to burning bituminous coal, peat, 8m; and I dohereby declare that the following is a full and exact descriptionthereof, reference being had to the accompanying drawings, making partof this specification Figure 1 being a top view of 'the stove, the coveror top plate being removed.

Figure 2, a central vertical section thereof in a plane indicated by theline :0 :0, fig. 1.

Figure 3, a horizontal section of the same in a plane indicated by theline as :v, fig. 1.-

Like letters designate corresponding parts in all of the figures,

Let'A represent the body of the stove. In the upper part thereof Iinsert two concentric, or nearly concentric cylinders, so as to form anouter annular chamber, 13, a central chamber, 0, and an intermediateannular chamber, G; and inside of the interior'chamber C I place adownwardly projecting flue or pipe, D, substantially as shown. The outerchamber B is closed at the top, but at the bottom it is open, so as tocommunicate with the fire chamber below and the draught first circulatesupward therein. from the upper part of the chamber B, through flueopenings or-pipes, a a, into the upper part of the chamber O, which isclosed both at the top and bottom. The draught-then, after plunging downnearly to the bottom of the said interior chamber, finally'ascendsthrough the pipe D to the smoke pipe E. The plunging movement of thedraught in the chamber C causes the greater part of the soot andparticles of unconsumed fuel to be deposited on the bottom, II, of thesaid chamber. This bottom is made to tilt, when desired, as indicated byred lines in fig. 2, or otherwise to open, so as to discharge the' sootcollected thereon down into the fire chamber to be at once consumed. Thebottom H is then righted or closed again, and the operation of the stovegoes on as before. The bottom is operated by a rod, m, extending upthrough the top of the stove, or by any other suitable means. Thisconstruction is peculiarly effectual in depositing the soot and productsof imperfect combustion from the draught and preventing their escapeinto the chimney to foul it afid the atmosphere above it, so thatthereby bituminous coal may be burned with cleanliness. The intermediateannular chamber Gr, although not necessary to the device above setforth, is very useful as an addition thereto, in obtaining much'heatfrom the stove which otherwise might be wasted in the draught. It alsoprotects the partition plate or plates, between the chambers 13 and C,from burning out, by keeping comparatively cool air in contact withthem. Air from the outside is admitted freely into this chamber G,through one or more pipes or passages 17 6, across the annular chamberB; and the upper end of this air chamber opens into the space under thecover I, which has perforations or. openingsff, by which the air escapesinto the room after circulating through and becoming heated by Theproducts of combustion then pass the walls of the chamber. The pipes orpassages a a, which form the communication between the chambers B and(3,, cross this 'air chamber and assist in heating the air therein. Inconnection with the inverted chamber B and the closed interior chamberC, I introduce air in small streams through apertures d d, under thebottom H of the said chamber 0, against which the products arising fromthe burning fuel first impinge. Thus fresh airis supplied so as tocomplete the combustion quite perfectly and deposit considerable ofthesoot before the draught proceeds further upward. As representedregularly in. the drawings, these apertures d 01 open from the airchamber G, whence the air is drawn for supplying the combustion. But Icontemplate a modified-construction here, which may be preferable. -.Anannular space or passage g, separated from the chamber G by apartitiomp, (or applicable in place, if the chamber is not used,) issupplied from passages it formed through the chamber B. These passagesare conveniently constructed by adding are or segmental plates Z l,under the pipes b b, so as to enclose crescent-shaped spaces betweenthem. These additional plates also serve to, protect the pipes b b fromdestruction by the intense heat, and may beirernovable when requiring tobe replaced. The partitions between the chambersB and C may be more orless conical, or otherwise vary from the cylindrical form represented.Stoves with the improvements specified above may have descending fluesfrom the top to the base, and an ascending fine or fines from the base,without interfering with the operations or materially departing from theconstruction above described. I

I do not claim an interior fine or smoke pipe, with a tilting bottom ordamper, as I am aware that such have before been used; but what I claimas my invention, and desire to secure by Letters Patent,

The interior chamber (L provided with a tilting or otherwise'openingbottom H, and a downwardly project-t ing pipe or flue D, substantiallyas and forthe purpose herein specified.

I also claim the combination of the chamber C, constructed and arrangedas above specified, and chamber B, substantially as and forthepurposeherein set forth. 1 I

I also claim the combination of the air-circulating chamber G with thechambers B and G, constructed and arranged as above specified,substantially as and for the purpose herein specified.

Ialso claim the air-supplying openings or passages d d, at the base ofthe chamber 0, constructed and arranged as above specified,substantially as and for the purpose herein; set forth. v

WM. A. BARLOW.

Witnesses:

J. S. BROWN, ,TnomAs T. PARKER.

